Strainer for waste-pipes, sinks, and the like



I. MAISANO.

STRAINER FOR WASTE PIPES, SINKS,,AND THE LIKE-,

APPLICATION FILED Ami-8,1319.

Patented Mar. 9, 1920.

' 2 SHEETS-SHEET l1 Wihwoo w. ki-

l. MAISANO.

STRAINER FOR WASTE PIPES, SINKS, AND THE LIKE. APPLICATION man AUG-8|1919.

1 33,433 Patented Mar. 9, 1920.

2 SHEETS-SHEET 2- IGNATIUS MAISANO, 0F WILMINGTON, DELAWARE.

STRAINER FOR WASTE-PIPES, SINKS, AND THE LIKE.

Specification of Letters Patent.

Patented Mar. 9, 1920.

Application filed August 8, 1919. Serial No. 316,062.

'0 all whom it may concern Be it known that I, IGNATIUS MAISANO, acitizen of the United States, residing at. \Vilmington, in the county ofNew Castle and State of Delaware, have invented new and usefulImprovements in Strainers for Waste- Pipes, Sinks, and the like, ofwhich the following is a specification.

My invention relates to a device for use with the drain or waste pipe ofa sink or the like to retain solid matter, as vegetable parings, breadcrumbs, pasty substances, threads, hair, etc., liable to choke the wastepipe, the invention also being applicable to bath tubs, and theconstruction such that the device shall be simple in design, composed offew parts, not liable to get out of order, and readily removable orseparable for the purposes of emptying, cleaning or disinfecting. Italso has other objects and advanta es as will appear.

In the accompanying drawings,

. Figure l is a view in vertical section showing my invention adaptedmore especially to a sink in which a strainer is desirably employed withthe discharge or drain pipe.

Fig. 2 is a plan of Fig. 1. Figs. 3 and 4 show adaptations to a bath tubor wash bowl.

Referringmore particularly to Fig. 1', A represents in part the body ofa sink having ashouldered perforation 0; preferably circular. B is adrain or waste pipe provided with an upper continuous flange b-restingupon the inturned shoulder of the sink body A. O is a cylindricalsocketed member the outer flange of which is seated upon the flange b ofthe waste pipe B, the connection.

between the parts being effected by means of bolts 0. The cylindricalflanged member C has an inturned annular shoulder or lip 03 upon whichrests the flange of the strainer D. Thus close unions are effectedbetween the engaging flanges of the sink A, the drain or waste ipe B andthe cylindrical socketed member 8, whereby'there can be no collection offoreign or unsanitary matter. This strainer, which may be spun up ofsuitable metal, is practically of thimble' shape, and has perforations"e. :The inner wall of the member C is true or unbroken, that is to sayunprovided with a ledge or seat upon which extraneous matter mightsettle in the dis charge of water from the sink. The strainer D extendsa considerable distance w'thin the drain or waste pipe B. A perforat dplate or disk E rests within the circular opening of the member 0 flushwith the surface of the sink and is provided with prongs f preferablyhaving slight resiliency. These prongs for a certain distance below theplate 01' disk E are straight. orat a right angle to the surface of saidplate but at their lower ends are inwardly curved as shown. This disk Ewhen forced into said opening is given by means of its prongs f a steadyseat withinsaid member, and the lower ends of these prongs, resting uponthe flange of the strainer D, hold the'latter in fixed position. Theshape given to these prongs enables the plate or disk E to be readilyinserted within the socket of the member C, and when these prongs arebrought in contact with the flange of the strainer D they rest upon itin such a way as to firmly maintain it against movement which might becaused by the inrush of water from the sink. A bail '01- ring g attachedto the flange of the strainer D admits of its removal as may berequired. The strainer may 'be furnished with a chain to guard againstdisplacement'or loss. Notches h are cut in the periphery of theperforated plate E, whereby the latter may be lifted out by the use ofsome convenient instrument.

Fig. 3 shows an arrangement more particularly adapted to bath tubs butalso applicable to sinks, wash bowls and the like. Instead of theperforated plate or disk E a solid plug F may be substituted, it to beremoved'when the tub is to be emptied. I do not claim the constructionshown in Fig. 3, which indicates how the ordinary plug F 'may be usedindependently of the perfo rated plate E.

In Fig. 4, the perforated plate or disk E is retained, and thecylindrical flanged member C has suflicientdength to admit of theinsertion'of the plug F.

In some cases where Water under high pressure is used and the deviceplaced immediately under the faucet, the plate E may be withdrawn andthe water directly discharged into the strainer D, this having a fromthe faucet be desired to cleanse the f strainer D, or a liquid or asoluble disinfectant is to be used therewith, thelperforated plate -Emay be lifted out and conveniently cleansed or. disinfepted- The waterthough entering the strainer D under full force--the plate E beingremoved-will not splash out of the mouth of the waste pipe 'B.

In either form of my invention the strainer D is held securely in placeupon the annular shoulder d of the flangedmember C by theperfogatediLdisk-or plate If], the spring prongs f of which serve notonly to hold the plate properly within its socket but to press upon theflange of the strainer D thus holding it firmly in place. "The primaryobject of the 'plate E, especially when my invention is applied toa bathtub, is to prevent any article, as a small body of soap, from fallingintov the strainer D; but upon its removal solid matter too large topass through the perforations of said plate will be sweptby the escapingwater into the strainer D for removal and disposition away from theWaste pipe. Should an article of value, as a ring or other small pieceof jewelry, fall into the tub it will lodge in the strainer D andreadily be discovered before the emptying thereof. Preferably thecylindrical flanged member C and the inserted plate E are flush withthe-inner surface of the tub, bowl, sink or the like, whereby the deviceshall ofl'er no obstruction. While my invention is shown as of reducedsize for'the adaptations specifically mentioned, it may be giwen greaterproportions for street drains and other uses where a considerable bodyof water'is to be directed into a waste pipe.

his not entirely essential to my invention that the prongs f of theplate E shall be elastic or resilient, as they may be nonelasticprovided they subservethe purpose of maintaining the plate E in positionwithin the cylindrical member C and rest upon the flange of the strainerD. i

Having. thus described my invention, .1

' claim 1. In combination with a supporting body having an openingprovided with an inner inturned continuous flange, a drain pipe with acontinuous flange seated upon said inner inturned continuous flange, asocketecl member, with a straight or unbroken interior circular wall,inserted in said body and furnished with an exterior continuous flangeseated upon the flange of said drain pipe, and also with an innerinturned flange or lip,.a strainer substantially 'of thimble shape withan upper flange resting upon said 1n-" lower inwardly curved partengaging the flange of said strainer so as to maintaln the latter inplace.

2. In combination with a supporting body having an opening provided withan inturned flange, a drain pipe having a flange adapted to seat on saidinturned flange, a

member insertible in said body and having an exterior flange restingupon' the flange of said drain pipe and also an lnner 1nturned flangeand an upper extension or socket, a strainer substantially of thimble.

shape having an upper flange adapted to rest upon said inner'inturnedflange, a perforated plate seated within the member insertible in saidbody and having resilient prongs "extending within said insertiblemember and resting upon the flange of said strainer, and a plug seatingwithin the extension of said insertible member.

In testimony whereof Iaffix my signature in presence of two witnesses.

IGNA'ITIUS MAISANO. Witnesses:

JosErH M. C. Munro, 1 NICOLANTONIO MINUTELLO.

